Manto nivoso

Stair Step

Claire BicknellHatcher Pass
Ver en el mapa
Foto de la observación 1Foto de la observación 2Foto de la observación 3Foto de la observación 4Foto de la observación 5Foto de la observación 6Foto de la observación 7Foto de la observación 8

Quick report

Cracking
isolated

Went up to stair step and beyond for some fun post storm skiing! For nearly the entire tour we were treated with 10''-15'' of light and fresh pow. Surprisingly our group spotted no signs of natural avalanches after the storm while getting eyes on ample terrain in good light. Frequent pole probes often found a soft layer of facets under a stout slab however in certain locations on southerly aspects underneath the new snow was simply wind board. The only sign of wind slab was right under ridge top on a southerly aspect at 4200' with small shooting cracks. A snowpit on an alpine NE aspect showed poor structure and a propagating result on basal facets. Another pit on a southerly aspect had a slight density change within the slab and ECTP 28. Cracking was increadibly isolated only found ~10' from SW ridgetops

Weather

Cloud Cover
broken
Wind Loading
light
Snow Avail For Transport
moderate amounts

Snowpack

We first investigated the snowpack at 3400' on a NE aspect. What we found was a snow height of 95cm with 40cm of pencil hard slab overlying 20cm of fist hard basal facets. Stability tests resulted in an ECTP 30 70cm↓ on these facets. Investigating the SW aspect at 3800' the majority of the 80cm of snow underneath the fresh was composed of stout pencil hard windslab. However there was a small 10cm layer of small 4F facets. On this layer we observed ECTP 28 35↓.